Answer : The best way to become a decorator is very much dependent on your interests
You can become a home decorator by studying art, design, interior or architecture. You could also consider making it into a hobby through trial and error with some of the more basic DIY tasks such as painting the walls, installing shelves, hanging artwork, etc
Home decorating falls within one of three general categories: commercial design for multi-unit properties; residential building for individuals in single family homes; and retail samples where designers are being creative before production -- these designers often work closely with architects as well as fabricators or material suppliers.